Customized nibs deliver perfectly tuned ink flow, no start-up problems and a clearly softer writing feel than series-produced standard nibs. A flexified EF nib too can noticeably change the writing character; writing an EF thereby feels more pleasant than one is used to from hard modern nibs. Providers are e.g. nibs.com (John Mottishaw); to be noted, however, are customs procedures with US orders, which require personal effort.